Re: Meeting ISO 9001:2015 7.1.6 Organizational Knowledge Requirements
As evidence of adequate organizational knowledge I would point to your Quality Objective / KPI results. If the numbers are stellar, and they should be if your system is working well with appropriate levels of knowledge, that is evidence that you have determined what you need to know, applied it, and maintained it.
KPI results that are achieved desired/expected targets is only part of a successful process. HOW they were achieved is the other part...the practices/activities in place.
Process = KPI + Practices ... at least, this is the "formula" I use.
If a company has defined and consistently applied practices AND is achieving the desired results...yay! Life is good.
If a company has defined and consistently applied practices BUT is not achieving the desired results, it's time for a discussion.
If a company has no defined practices or practices that are inconsistently applied BUT is achieving the desired results, it's time for a discussion.
If a company has no defined practices or practices that are inconsistently applied AND is not achieve the desired results...we really need to have a talk.
What if results are achieved because one person has the knowledge to correct/prevent issues (i.e., that experienced employee) before it becomes something major or high risk? How many of us know at least one person in the organization who has more information/experience in their little finger than the rest of the department's combined brain power? How do you capture that knowledge? What happens if that person wins the lottery or retires?
I agree that not everything needs to be defined or documented, but organizations should also consider the risk of NOT documenting knowledge or finding some way to capture and harness it for ongoing, consistent use.